Petri nets with I/O function hybrid model for intelligent control systems

Intelligent control systems (ICS) are complicated systems which consist of the knowledge-based decision makers (KBDM) and controlled plants. Generally, the knowledge-based decision makers can be modeled as discrete event dynamic systems (DEDSs), but controlled plants are continuous variable dynamic systems (CVDSs). So an ICS is a hybrid dynamic system (HDS) of DEDS interacting with CVDSs. If we combine the interface with the controlled plant, then the inputs and outputs of the “interface+controlled plant” are events, i.e., the “interface+controlled plant” has the I/O DEDS characteristics. So the entire ICS could be modelled in the unified DEDS frame. We propose a candidate hybrid model of extended Petri nets with I/O function for ICS. A simple example of ICS is also presented to illustrate the modelling approach